TY - BOOK ID - 135793564 TI - Studies of longitudinal stream profiles in Virginia and Maryland PY - 1957 PB - Washington (D.C.) US. Government printing office DB - UniCat KW - Valleys KW - -Valleys KW - -Rivers KW - -Rivers - UR - https://www.unicat.be/uniCat?func=search&query=sysid:135793564 AB - ER -